Answer:
Sexual reproduction involves the participation of two organisms where the two organisms will share each other's gametophyte or gamete. These gametes or gametophytes can fuse to form a fertilized zygote. On the other hand, in vegetative reproduction, only the vegetative parts of the plant give rise to new offspring.
Explanation:
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what amoeba cells do and where are they?
Answer:
Amoeba cells catch food and move about extending fingerlike projections of a colorless material called protoplasm and are found in decaying bottom vegetation of fresh water streams and ponds
Por qué el melanismo industrial es un tipo de selección direccional
El melanismo industrial es el fenómeno genético por el cual lepidópteros que viven en zonas industriales tienen un color oscuro. Este fenómeno se debe a que la selección natural favorece un determinado genotipo.
La selección natural es el principal mecanismo por el cual las especies y los organismos evolucionan (cambian) para adaptarse a su ambiente.
La selección natural se define como la supervivencia y reproducción diferencial de los individuos mejor adaptados a su ambiente.
Este proceso (selección natural) tiende a modificar las frecuencias de génicas (alélicas) y genotípicas las cuales determinan los rasgos adaptativos a lo largo de las generaciones.
La selección direccional es un tipo de selección natural que tiende a favorecer a un sólo alelo a lo largo del tiempo.
En el melanismo industrial, los lepidópteros (polillas) que expresan el alelo que codifica para el rasgo fenotípico 'color oscuro' se ven favorecidos porque esta característica les permite mimetizarse en un entrono ambiental oscuro causado por la polución ambiental de zonas industriales.
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severe anemia may trigger an adaptive conversion of:
Severe anemia may trigger an adaptive conversion of yellow bone marrow to red bone marrow.
Anaemia is defined as the decrease or the reduction of the oxygen carrying content of the blood which are the red blood cells.
These red blood cells and other blood cells which include the white blood cells and the platelets are produced in the body by the bone marrows by a process called haemopoiesis.
The bone marrow is divided into two:
yellow bone marrow andred bone marrow.The red bone marrow is made up of stem cells which can be converted to red cells when the need arises while yellow bone marrow is made up of fat.
During health conditions such as anaemia, there is increase in the need of red blood cells by the body.
There is usually the conversation of yellow bone marrow to red bone marrow to compensate for the increased demand of red blood cells.
This conversation is called an adaptive conversation.
Therefore,Severe anemia may trigger an adaptive conversion of yellow bone marrow to red bone marrow.
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Name one type of food that is made from glycerol and fatty acids.
Answer:
Fats and oils are esters of glycerol and three fatty acids. ... Other animal and vegetable fats contain predominantly longer-chain SFAs (more than 14 carbons in length) and are found chiefly in meats, butterfat, and some vegetable oils.
Explanation:
Fats and oils are esters of glycerol and fatty acids.
***
(1)
(d) Use words from the list below to complete the paragraph.
excretion
glucose
glycogen
Insulin
liver
oestrogen
3.7 shows a section through a
pancreas
secretion
starch
stomach
sucrose
The blood stream transports a sugar called
The blood sugar level has to be kept constant in the body.
If this level falls below normal, a hormone called glucagon is released into the blood by
an endocrine organ called the
The release of a substance from a gland is called
to increase the blood
Glucagon promotes the breakdown of
sugar level.
If the blood sugar level gets too high, the endocrine organ secretes another hormone
called
into the blood.
This hormone promotes the removal of sugar from the blood and its conversion to
[6]
glycogen in the
Total : 16]
most of the species that are yet undiscovered are probably
Which of the following has the most potential energy?
A. Melted ice cream
B. Two scoops of ice cream
C. A milkshake
D. A smoothie
Answer:
option c is the correct answer of the question
What would happen if a similar diffusion/osmosis experiment were performed with plant cells instead of animal cells? would plant cells behave in the same manner?
Answer: because plant and animal cells can tolerate different concentrations of water.
Explanation:
Image result for What would happen if a similar diffusion/osmosis experiment were performed with plant cells instead of animal cells? would plant cells behave in the same manner?
Osmosis affects plant and animal cells differently because plant and animal cells can tolerate different concentrations of water. ... However, plant cells need more water than animal cells, and will not burst in a hypotonic solution due to their thick cell walls; hypotonic solutions are ideal for plant cells.
When diffusion and osmosis experiments are performed on a plant cell, the plant cell will expand because it has a rigid cell wall, which prevents it from bursting.
What are osmosis and diffusion?Osmosis is the process when molecules move from a lower concentration area to a higher concentration area.
Diffusion is the process, in which the molecules move from higher concentration to lower concentration.
When osmosis happens to the animal cells, it will fully fill and burst.
But, it will not happen in the plant cell, because it contains a cell wall.
Thus, When diffusion and osmosis experiments are performed on a plant cell, the plant cell will expand because it has a rigid cell wall, which prevents it from bursting.
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the sun contributes to photosynthesis by providing plants with
Answer:
energy
Explanation:
the four kingdoms and example
What differences exist between prokaryotic and eukaryotic
cells?
SELECT ALL THAT APPLY
a) capsule
b) ribosomes
c) size
d) pili
Answer:
A)B)andD)
Explanation:
i thought i was right and looked it up to be sure
Cells have______of enzymes to act as biological _______.
why do we need to follow the correct procedure in collecting sample
please don't search in Go-ogle
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which types of animals have the highest mass-independent metabolic rates? which have the lowest?
Answer:
Ectotherms have the highest mass and the Endotherms have the lowest
2.
What type of correlations would you predict under
the trophic cascade hypothesis?
Answer:
the correlation would be negative because a change in the upper trophic level causes the opposite effect in the lower level.
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Which statement BEST describes the proper procedure for patient identification?
A: Gather patient data and compare it to their history.
B: Approach the patient and ask them their name.
C: Check the information in their chart or orders against their wrist band.
D: Have the patient fill out a questionnaire so the information can be cross checked.
Answer:
A
Explanation:
When you gather the patients data it will help to know its inherited or what
what can California california lilacs tell us about the environment ?
Answer:
Among the important facts on California lilac is its ability to fix nitrogen in soil, which is a win-win for the home gardener and in nature. The flowers are the real showstopper. Most are in terminal clusters of deep blue, but some forms bear lighter blue, lavender or even white flowers.
How would you expect the rate of an enzyme-controlled reaction to change if the temperature was raised from 35 °C to 55 °C? Explain your answer.
5. Plant cells contain structures that carry out specialized energy-transfer functions that animal cells
do not carry out. Which of the following structures carries out this specialized function in plant
cells?
a. Lysosome b. Chloroplasts c. Mitochondria d. Central vacuole
Answer:
b. chloroplasts
Explanation:
chloroplasts convert engergy from the sun into energy in sugar
most plants incorporate carbon dioxide into sugars by means of a cycle of reactions called the:
Photosynthesis is your answer.
how did we get from a few thousand cells to more than a million
Answer: doubling by binary fission
Explanation:
Which function in prokaryotes and eukaryotes? (select all that apply)
1) downstream enhancer
2)RNA polymerase
3)upstream enhancer
4) DNA template strand
5) promoters
which molecule do indole positive bacteria cleave to form indole
In indole-positive bacteria, Tryptophan is used to form indole. This reaction is catalyzed by a tryptophanase enzyme.
Tryptophanase or tryptophan indole-lyase is an enzyme that catalyzes the reversible beta-elimination of Tryptophan to form indole.
Tryptophanase is present in many Gram-negative bacteria.
The indole-positive bacteria include Escherichia coli, Haemophilus influenzae, Aeromonas hydrophila, A. punctata, Bacillus alvei, Klebsiella oxytoca, etc.
On the other hand, the indole test is a test used to determine the ability of bacteria to convert tryptophan into indole.
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which machines use principles of slopes A . wheelbarrow B.crowbarC.pulley D.claw hammer E.ladder F.stair case G.contour roads
Answer:
Ladder, Staircase, Wheelbarrow,
Explanation:
I'm sorry, but I need help with my assignment. I've started but I can't seem to formulate a hypothesis and interpret it, and my biggest problem is answering the hypothesis.
Answer:
I am sorry
Your PDF is in Portuguese language.
Please send the another question with english in it.
A typical eukaryotic cell has enough available ATP to meet its needs for about 30 seconds. What is likely to happen to an individual when they exhaust their ATP supply? ATP will be transported into the cells from the circulatory system. Catabolic processes will be activated to generate additional ATP. The athlete will have to sit down and rest. Anabolic processes will be activated to produce new mitochondria.
In the case of given scenario, the catabolic processes will be activated to generate additional ATP. The correct option is B.
What are catabolic processes?Catabolic processes are the set of enzyme-catalyzed responses that disintegrate or degrade fairly large molecules in living cells.
Part of the chemical energy emitted during catabolic processes is conserved as energy-rich compounds such as adenosine triphosphate [ATP].
Thus, the correct option is B.
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How can Earth’s layers be defined? Select the two correct answers.(1 point)
by their chemical compositions
by their physical properties
by their proximities to the core
by their amounts of land area
by their asthenospheres
Answer:
By their chemical composition
By their asthenospheres
Explanation:
The earth's layers can be defined with the help of the following facts:
By their chemical compositions. By their physical properties.Thus, the correct options for this question are A and B.
What are the different layers of the earth?The structure of the earth is generally categorized into four major layers. They are as follows:
The crust.The mantle.The outer core.The inner core.Each of the above-mentioned layers has unique chemical composition. Apart from chemical composition, the physical state is also important when describing the different layers of the earth. The concentration of iron is found to be the highest in the core regions along with a little bit of nickel.
Therefore, chemical composition and physical properties are the two parameters that are used to define the different layers of the earth. Thus, the correct options for this question are A and B.
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The central dogma does not apply to some viruses. Select a specific virus or type of virus and explain how it
deviates from the central dogma.
Please respond on separate paper, following directions from your teacher.
Answer:
Explanation:huh?
What aspect of a muscle cell allows
movement in the body?
Answer:
Skeletal muscle is attached to bones and its contraction makes possible locomotion, facial expressions, posture, and other voluntary movements of the body. Forty percent of your body mass is made up of skeletal muscle.
Explanation:
What are the components of a lipid?
a. Lipids are made of made of carbons bound to hydrogen and oxygen groups; these often form high-energy ring structures
b. Lipids are made of long chains of carbons bound to hydrogens, called hydrocarbons
c. Lipids are made of carbons bound to hydrogen, oxygen, nitrogen, and phosphorous groups; these are often bound into single and double-ring structures
d. Lipids are made of carbons bound to hydrogen, oxygen, and nitrogen groups; the unequal sharing of electrons around the oxygen (carboxyl) and nitrogen (amino) groups cause the molecule to fold up on itself and form different shapes that affect the function of the molecule in the living organism
Answer: D
Explanation:
Lipids are made of carbons bound to hydrogen, oxygen, and nitrogen groups; the unequal sharing of electrons around the oxygen (carboxyl) and nitrogen (amino) groups cause the molecule to fold up on itself and form different shapes that affect the function of the molecule in the living organism.